{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "discover vulnerability", "arguments": ["discoverer", "vulnerable system owner", "capabilities", "common vulnerabilities and exposures", "time", "vulnerable system version", "vulnerability"]}], "input": "When attackers find vulnerabilities in a network , they use the ransomware to encrypt files there and demand payment to unlock them ."}
{"discover vulnerability": [{"discoverer": "attackers", "vulnerable system owner": "NAN", "capabilities": "NAN", "common vulnerabilities and exposures": "NAN", "time": "NAN", "vulnerable system version": "NAN", "vulnerability": "vulnerabilities"}]}